Influence of overnight orthokeratology lens fitting decentration on corneal topography reshaping

作     者：Jiaojie Chen Wei Huang Rong Zhu Jun Jiang Yiyu Li 

作者机构：School of Optometry and OphthalmologyWenZhou Medical UniversityWenZhouZheJiangChina Eye Hospital of Wenzhou Medical University270 West Xueyuan RoadWenzhouZhejiang 325027China 

出 版 物：《Eye and Vision》 (眼视光学杂志（英文）)

年 卷 期：2018年第5卷第1期

页      面：48-58页

核心收录：

学科分类：1204[管理学-公共管理] 1004[医学-公共卫生与预防医学(可授医学、理学学位)] 081504[工学-水利水电工程] 1002[医学-临床医学] 08[工学] 0815[工学-水利工程] 

基　　金：supported by the Scientific and Technological Program of Wenzhou[Y20160438,G20160033] National Natural Science Foundation of China Natural Science Foundation of Zhejiang Province[LY14F050009,LY16H120007] National Key Research and Development Program of China[2016YFC0100200] 

主　　题：Orthokeratology Lens fitting decentration Zernike coefficients Contact lens Corneal topography 

摘      要：Background:This retrospective study was designed to investigate the sole influence of orthokeratology(OK)lens fitting decentration on the Zernike coefficients of the reshaped anterior corneal ***:This study comprised a review of 106 right eyes and measurements of corneal topography both before OK and at 1-month follow-up visit.A routine was designed to calculate local corneal surface astigmatism and assist the determination of OK lens fitting decentration from pupil *** pupil-centered corneal Zernike coefficients of baseline(PCCB)and post-treatment(PCCP)were ***,the OK-lens-centered corneal Zernike coefficients of post-treatment(OCCP)were also calculated and considered as the presumptive ideal fitting group without *** between lens fitting decentration and the change of Zernike coefficients including(PCCP−PCCB)and(PCCP−OCCP)were ***:Patients with a mean age of 11±2.36 years old had an average spherical equivalent refractive error of−3.52±1.06 D before *** month after treatment,OK lens fitting decentration from pupil center was 0.68±0.35 *** of 3rd-order(P0.05).For the high order corneal Zernike coefficients in(PCCP–OCCP),radial distance of decentration was correlated with C^(−1)_(3)(r=−0.296,P0.05),C^(1)_(3)(r=−0.396,P0.001),and C^(0)_(4)(r=0.449,P0.001),horizontal decentration was significantly correlated with C^(1)_(3)(r=0.901,P0.001)and C^(1)_(5)(r=0.340,P0.001),and vertical decentration was significantly correlated with C^(−1)_(3)(r=0.904,P0.001).Conclusions:OK lens fitting decentration within 1.5 mm hardly influenced the change of corneal spherical power for myopia correction,but significantly induced additional corneal